JPS6181369A - Method of controlling group of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a group management control method for elevators, and is particularly effective in a call allocation system.

[Conventional technology and problems]

Multiple elevators are managed as a group, and when a hall call occurs, the status of each elevator (car position, operating direction,
A so-called call assignment method is widely adopted in which an evaluation value of each elevator is calculated according to a predetermined evaluation formula based on the call status, etc., and the hall call is assigned to the most suitable elevator based on the result.

By the way, in calculating the evaluation value of this call allocation method, the waiting time for hall calls is used as one of the representative parameters. Conventionally, the maximum value of the waiting times is suppressed or the overall waiting time is reduced. However, when we calculated the average waiting time for each floor, there were cases where inequity occurred.

For example, during down-peak hours (such as during the closing hours of a business building), there is a tendency for waiting times to be longer for descending calls on lower floors due to full traffic. Even if the total time is 30 seconds, there are cases where it is 15 seconds on one floor and 45 seconds on another floor. This inequity in waiting times on each floor caused dissatisfaction and distrust among customers.

[Means to solve the problem]

The present invention has been made in view of the above problems, and an object of the present invention is to provide a group management control method for elevators that can provide fair service to each floor. A feature of the present invention is that the deviation of the average waiting time for hall calls for each floor direction within a certain period of time in the past is used as one of the parameters in calculating the evaluation value, and the hall calls are The point is to allocate.

〔Example〕

An embodiment of the present invention will be described below.

First, waiting time values for each floor and each direction for a certain period of time (for example, 10 minutes) in the past are accumulated as data. This data can be updated, for example, every 10 minutes, or every 5 minutes, the old 5 minutes of data is discarded and the new 5 minutes are added to the 10 minutes.
The data may be set to minutes. Of course, the time is 1
It is not limited to 0 minutes.

Figure 1 shows waiting time data for each floor direction for the past 10 minutes for a building with 5 floors as an example. Shows minute data. In Figure 1, 1U is the hall call in the ascending direction on the 1st floor, 2U to 4U are the hall calls in the upward direction on the 2nd to 4th floors, and 2D to 5D are the hall calls in the upward direction on the 2nd to 4th floors.
Each represents the hall call in the downward direction of 5@, a】1
~a41, b21-bF+I, etc. are waiting times for those hall calls. For example, in Figure 1, 1
Two hall calls have occurred in the past 10 minutes for the ascending hall call 1U on the floor, and the waiting time value at each time is a.
ll and a12, and the same is true for the others.

Next, we will explain how to calculate the evaluation value in the case where, for example, a new hall call is generated in the direction of going up one floor, and this is assigned.

FIG. 2 is a diagram showing predicted waiting times for hall calls that have already been allocated and for newly generated hall calls. In Figure 2, C4^ is the predicted waiting time value when the 1@ascending hall call is provisionally assigned to machine A, and C3 and D5 are the predicted waiting times for the already assigned hall calls for 3rd floor ascending and 5th floor descending, respectively. It is a time value. At this time, there are no hall calls on other floors.

Similarly, the predicted waiting time value in the case of provisional allocation to another car is also determined for each car. In this case, the predicted waiting time values C3 and D5 for hall calls that have already been assigned may change depending on which car is assigned to the first floor ascending hall call.

It should be noted that the method of determining the waiting time or predicted waiting time for a hall call is well known, so the explanation thereof will be omitted here.

Next, the average value of the waiting time value for the past 10 minutes in FIG. 1 and the predicted waiting time value for the ongoing hall call in FIG. 2 is determined as the average waiting time for each floor direction. Figure 3 shows the average waiting time for each floor and direction when the first floor ascending hall call is provisionally assigned to car A. For example, 11 is a11+
This is the average value of a12, O, and A, and the same applies to the others.

In the same way, when a first floor ascending hall call is provisionally assigned to another car, the average waiting time value is determined for each floor direction.

Then, calculate the standard deviation value of T1~a4+''5~T2 for each car, and assign the 1st floor ascending hall call to the car with the smallest value.In other words, the variation in the average waiting time value for each floor direction Instead of finding the standard deviation value of the side chain for the machine that has the smallest value, it is also possible to find the overall average value of each waiting time for each direction on each floor and assign it to the machine that has the smallest deviation from this average value. can.

It goes without saying that in calculating the 1-evaluation value, not only the above-mentioned deviation is used as a parameter, but also other parameters such as parameters related to energy saving can be used for a comprehensive judgment.

〔Effect of the invention〕

According to the present invention, since the waiting time on each floor is averaged, there is no unfairness in the waiting time on each floor, and it is possible to eliminate customer dissatisfaction and distrust regarding the unfairness of the service.

[Brief explanation of drawings]

Figure 1 shows waiting time data for each floor direction, Figure 2
The figure shows the predicted waiting time data for each floor direction.
The figure shows average waiting time data for each floor direction. 1U to 4U,...J floor to 4th floor ascending hall number 2D to 5
D., 2nd to 5th floor descending hall call patent applicant Fujichik Co., Ltd. Figure 2

Claims (1)

[Claims] Multiple elevators are put into service for multiple service floors, and when a hall call occurs, the evaluation value of each elevator is calculated based on the condition of the elevator according to a predetermined evaluation formula, and based on the result, the most suitable elevator is assigned to the hall. A method for group management and control of elevators, in which calls are assigned, wherein the deviation of the average waiting time for hall calls on each floor and in each direction within a certain period of time is used as at least one of the parameters for calculating the evaluation value.